Question

Решите уравнение:(х+5)^2-х^2=х-2

Answer 1

Х^2 + 10х + 25 - х^2 -х +2 = 0
9х + 27 =0
9х = -27
х = -3

Answer 2

(х+5)²-х²=х-2
x²+10x+25-x²=x-2
10x+25=x-2
10x-x=-2-25
9x=-27
x=-27:9
x=-3